package com.lvtn.adsonandroid;

import java.io.File;
import android.content.Context;
public class FileCache {
private File cacheDir;
public FileCache(Context context) {
// Find the dir to save cached images
	if (android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED))
		cacheDir = new File(android.os.Environment.getExternalStorageDirectory(),"LVTN");
	else
		cacheDir = context.getCacheDir();
	if (!cacheDir.exists())
		cacheDir.mkdirs();
	}
	public File getFile(String url) {
	// I identify images by hashcode. Not a perfect 
	//solution, good for the
	// demo.
		String filename = String.valueOf(url.hashCode());
	// Another possible solution (thanks to 
	//grantland)
	// String filename = URLEncoder.encode(url);
		File f = new File(cacheDir, filename);
		return f;
	}
	public void clear() {
		File[] files = cacheDir.listFiles();
		if (files == null)
			return;
		for (File f : files)
			f.delete();
		}
	}
	